An object with a mass of #2 kg# is revolving around a point at a distance of #7 m#. If the object is making revolutions at a frequency of #1 Hz#, what is the centripetal force acting on the object?

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Answer 1 · 2017-07-19T18:38:02

The centripetal force is #=552.7N#

The centripetal force is

#F=mv^2/r=mromega^2#

The mass is #=2kg#

The radius is #r=7m#

The angular velocity is #omega=2pif=2pi*1=2pirads^-1#

The centripetal force is

#=2*7*(2pi)^2=552.7N#

Answer 2 · 2017-07-19T18:38:13

#F_c=56pi^2N#

We will first find the angular velocity :

#ω=2pif=2pi*1=2pi(rads)/s#

The centripetal force is :

#F_c=mω^2r=2*4pi^2*7=56pi^2N#